I need to read through this more but I think the appearance of the Cauras decal is simple miss labeling by owners who didn't take the time to get the correct decals. That one black green is an obvious repaint, just look at that crappy attempt to paint a head lug.
BTW two of the three US market Protos I've seen did not have a Proto decal, but that is common on Reparto Course frames of the time. The third is an obvious repaint.
AFAIK all US Proto frames were painted in the states and I believe you could pic some colors. Mine sports Celeste with a decal similar to an '89 Advantage. I may have been one of the first in the country to get one.
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